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<head>
    <meta charset="UTF-8">
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    <title>Title</title>
    <link href="demo02.css" rel="stylesheet" type="text/css">
    <style>
        a {
            color: #000;
        }
        a:hover {
            color: blue;
        }
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</head>
<body style="background-color: bisque">
<p>熊儿老猫</p>
<h1 style="color: aqua;text-align: center">熊儿老猫</h1>
<hr><br>
<a href="demo.html" target="_parent" style="color: black">link</a>
<br>
<hr><img src="https://dss0.bdstatic.com/70cFuHSh_Q1YnxGkpoWK1HF6hhy/it/u=1906469856,4113625838&fm=26&gp=0.jpg">
<hr><br>
<div style="height: 900px;">
<iframe src="demo03.html" style="width: 300px;height: 400px;margin-left: 100px;"></iframe>
</div>
<hr>
</body>
</html>